Muscles Notes

Question 0

List 4 things about smooth muscles and give an example

Answer 0

1) involuntary
2) nonstriated
3) single nucleus
4) can repair
Ex) intestines

Question 1

List 4 things about skeletal muscles and give an example

Answer 1

1) voluntary
2) striated
3) many nuclei
4) can repair
Ex) arms

Question 2

List 2 things about cardiac muscles and give an example

Answer 2

1) involuntary
2) striated
Ex) heart

Question 3

Tissue that supination muscle tissue and separates it from other tissues

Answer 3

Fascia

Question 4

Connects muscle to bone

Answer 4

Tendons

Question 5

_____ turns into ______ at connection points

Answer 5

Fascia, tendons

Question 6

What is the muscle make up

Answer 6

Muscles-fascicles-muscle fibers-myofibrils-myofilaments

Question 7

Thin, get pulled, move

Answer 7

Actin

Question 8

Thick, pull on, do not move

Answer 8

Myosin

Question 9

Muscles always contract by only ____

Answer 9

Shortening

Question 10

Myosin and actin fibers slide over one another in a jerky motion to shorten the muscle fiber

Answer 10

Rachet theory

Question 11

Muscles are simulated to contract by nerves that attach to the muscles

Answer 11

Motor neurons

Question 12

Point where the neuron connects to muscle

Answer 12

Neuromuscular junction

Question 13

What are the 5 steps of contraction

Answer 13

1) impulse from brain
2) ACH is released
3) Sodium enters fibers
4) calcium is released from SR
5) myosin pulls actin

Question 14

What are the 5 steps of muscle relaxation

Answer 14

1) stop impulse
2) ACHase breaks down ACH
3) sodium leaves muscle
4) calcium returns to storage
5) myosin releases actin

Question 15

Causes sodium to be released which causes Calcium to be released

Answer 15

Acetylcholine

Question 16

Chemical that cause sodium and calcium release to stop and stops contraction

Answer 16

ACHase

Question 17

Muscle fibers contract at 100% or not at all

Answer 17

“All or none principle”

Question 18

No muscle movement

Answer 18

Isometric contraction

Question 19

Give an example of an isometric contraction

Answer 19

Pushing hands together

Question 20

Muscle shortens

Answer 20

Isotonic

Question 21

Give an example of an isotonic contraction

Answer 21

Lifting weights

Question 22

Muscle loss

Answer 22

Atrophy

Question 23

Muscle gain

Answer 23

Hypertrophy

Question 24

Connection point that is non moving

Answer 24

Origin

Question 25

Connection point that moves

Answer 25

Insertion

Question 26

Muscle that causes a contraction

Answer 26

Prime movers

Question 27

Muscle that works against the prime mover to coordinate the action

Answer 27

Antagonists